<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>表格</title>
</head>
<body>
<table border="1" width="500" align="center">
  <tr bgcolor="#7fff00">
    <td align="center">a</td>
    <td align="center">b</td>
    <td align="center">c</td>
  </tr>
  <tr>
    <td>d</td>
    <td>e</td>
    <td>f</td>
  </tr>
  <tr>
    <td>g</td>
    <td>h</td>
    <td>i</td>
  </tr>
</table>
</body>
</html>